[CMake] Windows: cannot use system libraries on MinGW #391
Description
Into src/submodules there are some thirdy party libraries.
Surely, they are useful when MSVC is set, otherwise you could have some difficulties to link them.
However, if WIN32 is set into CMake, it could not be MSVC but also MINGW.
I'm wondering what you think about letting CMake to find system libraries like zlib, etc also on Win32.
In my opinion, it can be done quite easily by doing few changes into CMakeLists.txt.
For example, CMake could search zlib like UNIX does and then it could fall down to check the presence of the submodule if ZLIB_FOUND was not set.
What do you think?